Swing help???

[Cut68]

So I know this would be easier to answer if I had a video of my swing, but I don't, so here goes anyway........

I was messing around in the back yard last night and as I was taking a practice swing I looked up and saw my swing in a window. I was quite alarmed! It's been a few years since I've had my swing taped, but I noticed immediately how vertical I got with the club, swing plane completely out of wack. Instead of taking the club around and behind my head, I take it straight up over the top of my head. I know for certain that this isn't "my swing" but when I tried to correct it, I had a real hard time even hitting the ground! I'm assuming this has just happened gradually over time, but still it's a concern for me, because my ball striking isn't what it was 3 years ago, and I've developed a shoulder problem that certainly could be caused by this motion.

So 2 questions:

1 - What is my current motion doing to my ball flight? I'd always thought that a flat swing would cause a hook, so in theory this would cause a slice, but I'm hooking the ball more than ever. Thoughts?

2 - What's the easiest way to get back on plane? don't really want to rebuild my swing mid-season (short season here!) but I will if I have to.

Thanks!

[Cut68]

So I took some advice on another thread, and it makes sense to me. I've flattened the plain (was getting too vertical) and it feel's fairly natural. I've found my normal address isn't close though.... I'm hitting it way up on the hosel and need to set up far from the ball to hit it solid, so far that my club is a half inch inside the ball at address. When I do that I hit it solid and I like the ball flight, but it feels very abnormal to me. What am I doing wrong now?